Flush tank with outlet siphon



June 14, 1938. w. J. coLLlsoN 2,120,856

FLUSH TANK WITH OUTLET SIPHON Original Filed Nov. 25, 195 2 Sheets-Sheet 1 l 3mm W.- J aZzlsv/ June 14, 1.938-- w. J. coLLlsoN FLUSH TANK WITH OUTLET SIPHON original Filed Nov. 25, 193e 2 sneeiS-seei 2 Patented June 14, 1938 FLUSH TANK WITCH OUTLET sIPHoN William J. (lollison, Bakersfield, Calif.

riginal application November 25, 1936, Serial*V No. 112,806.r Divided and this application April 8, 193'?,Y Serial No. 135,787

3 claims, (ol. 4-42) This invention relates to a flush tank with outlet siphon structureand it aims to provide an improvement upon those devices disclosed in Letters Patent issued to me No. 1,812,774 on June 30,

6 1931, No. 1,842,715 on January 26, 1932and 1,-

933,416 on October 3,1, 1933.

The present application is a division oi my application Serial No. 112,806 liled November 25, 1936 for a Flushing device and the ball cock structure disclosed herein, is the subject matter of such pending application.

It is particularly aimed to provide an improved structure using two inverted U-shape traps or chambers vented with two breather tubes. and one upright U-shape trapl or chamber constructed and arranged without moving parts to act as a valve to control the flow of water from the flush tank to the toilet bowl.

l It is further aimed to provide in connection with the novel trigger arrangement and ball cock structure constituting the subject matter of said application 112,806, novel adjustment screws on the ball cock and breather tubes on the flushing unit to synchronize the action of the ball cock and flushing unit so as to properly control the flow of Water into the flush tank and out of the flush tank through the flushing unit to the toilet bowl, and to provide such a construction having the advantages set forth, which may be incorporated within the flushing tank, and which may be adapted to practically all standard flush tanks and toilet bowls without change therein, to effect cheaper manufacture, quieter action and better appearance.

'Ihe more specific objects and advantages will become apparent from a consideration of the description following taken in connection with accompanying drawings illustrating an operative embodiment.

In said drawings:

Figure 1 is a View showing my improvements in side elevation and as-mounted within a flush tank, the latter being shown in transverse section;

Figure 2 is a detail vertical sectional View taken through the trap device; I

Figure 3 is a vertical sectional view taken on the line 3-3 of Figure 2;

Figure 4 is a transverse sectional view taken on the line 4-4 of Figure 2; y

Figure 5 is a transverse sectional view taken on the line 5-5 of Figure 2;

Figure 6 is a detail enlarged side elevation of the link connection between the trigger and inlet valve lever;

Figure'7 is a detail section taken on the line 'I--l of Figure 6, and

Figure 8 is a detail side elevation of the said lever.

Referring specifically tothe drawings wherein like reference characters designate like or similar parts, lil designates an ordinary 0r conventional water closet flush tank in the bottom wall of which a'water supply pipe I I is connected, risy 1 ing to a suitable height and mounting a bracket '350 I2 having a depending outlet or hush pipe i3, terminating above the bottom wall of the tank I0. The supply of Water through the pipe ll is normally cut-off at a conventional Valve It under control of a vertically slidable plunger l5, suitably mounted in the bracket I2 and engaged by an adjustable screw I6 carried by a lever-il and pivoted as at I8 to an arm I9 of the said bracket Said bracket I2 also has another arm at 22 to A2l) which is pivoted at 2 I, a lever 22 from which an arm 23 extends and carries a float or ball 2li at its free end. The lever or trigger 22 carries an adjustable set screw 25 for co-action with the free end of the lever I'I. An operating ring 2S 25 is pivoted at 2'I to the trigger lever 22 and to such ring links 28 are pivoted at 29 and such links by means of a screw or the like 32, are pivotally and slidably connected to the lever I'l through an elongated slot 3| of the lever Il. 30

Said ring 26 is adapted to b-e actuated by a push button or lever arrangement from without the tank.

A trap unit generally designated S2 is suitably mounted within the tank Ill, having its outlet or `di,

. ilush pipe 33 extending water tight through the bottom wall of the tank and leading to a toilet or the like. The inlet to the trap device at 34 is above the bottom wall of the tank-and a tortuous passageway is provided through the trap device providing a trap as at 35, an inverted trap as at 36, and an air chamber 3l'.

kA refill tube 38 is connected to the trap device, extending upwardly therefrom, thence downwardly, and thence upwardly terminating within the lower end oi the pipe I3.4 Also connected to the trap device and communicating with the air chamber 31 is a breather pipe 39. Adjacent the breather pipe 39 is a second breather pipe et, extending above and thence downwardly and be- '3 ing connected to the trap device in communication with the inverted trap or chamber 3B. It will be noted that the inlet or lower end of the breather pipe 39 is slightly above the inlet or 55 lower end of the breather pipe 40 and the latter is slightly above the lowest water level.

In the description oi the operation of the device, three water levels will be referred to as have been indicated in Figure 1 of the drawings, namely high water level, normal water level, and lowest water level. The trigger ring 26 is actuated by a push button or lever arrangement or otherwise from without the tank which raises the same, breaking the lock between the ring 26 and links 28, which releases the pressure on the lever II, allowing the water to enter the tank IIJ through the pipe I3. This causes the water to rise in the tank I0 from the normal water level ,to the high water level, at which point it displaces the air in chamber 36, which fills with water through the inverted U-trap 31. The water then sets upY siphonic action through the U-trap 35 over the inverted U-trap 36, the water travelling thence down through the regular flush pipe 33 into the toilet bowl. As the water level lowers in tank iii, the oat ball 24 drops with the water level causing the ring trigger plate 2 6 and connecting links 28 to automatically fall into locking position.

When thewater level fallsy below the lower end of breather pipe 39, the upper end of which opens into the chamber or trap 3l, air enters pipe 39 and lls chamber 36. A short interval later, the water falls below the open end of the breather pipe 40 which extends above the high water level, and air enters chamber 39. An inverted U-trap is formed returning down and opening into the trap or chamber 3G which breaks the siphonage pull at this point and leaves U-trap 35 filled with water which seals chamber` 36 and causes an air pressure to build up therein as the water level rises in the inlet 34 of the trap device and in the tank I 0 to a predetermined normal water level which is regulated by the adjustment screw I 6.

The adjustment screw 25 presses down on the lever Il and regulates the interval of time which float ball 24 remains at the lowest position, which allows chambers 2 and 2S to become filled with air before the rising water level seals chamber 36 by rising aboveV the lower ends of breather pipes 39 and 40. Refill pipe 38 extends below the lowest water level and above the highest water level, forming a U-trap at the lowest point. Water entering the flushing unit through the rell pipe 38 flows into U-trap 35, causing the water level therein to rise, overowing through the second inverted U-trap 3B and thence through the flush pipe 33 to rell the toilet bowl.

It will be noted that the ,adjusting screw I6 slows down the ball cock 24 at the lowest water level, such hesitation allowing the air chambers to rell with air. The air tubes or vents 39 and 40 are breaker vents and also silencers as they do not make a hissing noise. The slotted connection at Sli-3| and screw I6 co-act as they allow the feed of the incoming water to be slowed down, say for a few seconds, to allow the air chambers to refill with air. Y

It will be noted that the plunger I5 is loose and not connected to the ball cock valve at I4. The water pressure opens the ball cock valve when the lever I'I with the screw I6 disengages it. Back siphonage will close it shut and tight.

Various changes maybe resorted to provided they fall within the spirit and scope of the invention.

I claim as my invention:-

1. A device of the class described having a flush tank, a water supply pipe rising therein, said pipe having a downwardly extending discharge pipe, float control means, a valve controlled by the later to govern the supply of water through the rst mentioned pipe, a trap device within the tank having a flush pipe leading therefrom, said trap device having an inlet below the water level and a passageway therefrom to the flush pipe of connected portions of U-shape one above the other, a rell pipe extending from adjacent the lower end of the discharge pipe to the upper portion of the interior of the trap device, said rell pipe adjacent said lower end of the discharge pipe being upturned and engaging in the discharge pipe, a breather pipe communicating with the in- Y terior of the trap device at the upper portion, and

a breather pipe communicating with the interior of the trap device at the upper portion ofthe other U-shape passage therein.

2. A device of the class described having a ush tank, a water supply pipe rising therein, said pipe having a downwardly extending discharge pipe, iloat control means, a valve controlled by the latter to govern the supply of water through the iirst mentioned pipe, a trap device within the tank having a ush pipe leading therefrom, said trap device having an inlet below the water level and a passageway therefrom to the flush pipe o connected portions of U-shape one above the other, a rell pipe extending from adjacent the lower end of the discharge pipe to the upper portion of the interior of the trap device, said rell pipe adjacent said lower end of the discharge pipe being upturned and engaging in the discharge pipe, a breather pipe communicating with the interior of the trap device at the upper portion, and a breather pipe communicating with the interior of the trap device at the upper portion of the other U-shape passage therein, the second mentioned breather pipe having its lower end below the lower end of the other breather pipe, said second mentioned breather pipe being U-shaped and extending above the high water level.

3. A device of the class described having a iiush tank, a water supply pipe rising therein, said pipe having a downwardly extending discharge pipe, float control means, a valve controlled by the latter to govern the supply of water through the first mentioned pipe, a trap device within the tank having a flush pipe leading therefrom, said trap device having an inlet below the water level and a passageway therefrom to the'ush pipe of connected portions of U-shape one above the other, a rell pipe extending from adjacent the lower end of the discharge pipe to the upper portion of the interior of the trap device, said rell pipe'adjacent said lower end of the discharge pipe being upturned and engaging in the discharge pipe, a breather pipe communicating with the interior of the trap device at the upper portion, a breather pipe communicating with the interior of the trap device at the upper portion of the other U-shape passage therein, the second mentioned breather pipe having its lower end below the lower end of the other breather pipe, said second mentioned breather pipe being U-shaped and extending above the high water level, the

rell lpipe also extending above the high water level.

WILLIAM J. COLLISON. 

